## Polynomial functions and rational functions

Rational functions:

The purpose of this discussion is to find out why some rational functions are not defined for a certain real numbers . Consider the rational function

f(x)=x2+5x+6×2−4x+3f(x)=x2+5x+6×2−4x+3

Instruction:

1. Find the domain of f(x) in set builder notation

2. Find the domain of f(x) in interval notation.

3. Evaluate the function at x=1, and x=3 and discuss your findings

4. Comment to at least 2 students post.